Rendering apparatus



' (No Model.)

G..-BAYHA RBNDERING APPARATUS.

N0. 254,103. Patented Feb. 28,1882,

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UNITED STATES- enonon BAYHA, F

- PATENT OFFICE.

ST. LOUIS, MISSOURI.

RENDERING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 254,103, dated February 28, 1882.

Application filed February 28, 1881. (N0 model.)

To all whom it may concern:

Be it known that I, GEORGE BAYHA, of St. Louis, Missouri, have made a new and useful Improvement in Rendering Establishments, of which the following is a full, clear, and exact description, rel'erence being had to the an-' nexed drawing, making part of this specification, in which the improvement is shown in sectional elevation.

The object of the present invention is to produce a device wherein all the parts are so constructed and arranged as to promote and secure a maximum amount of draft, thereby conveying away and also eliminating all noxious exhalations. To this end the parts have such. relation juxtaposition, an (1 formation as to combine and assist one another in producing this result.

The substances to be rendered are placed in tanks A A, as is customary. The tanks, however, as well as all the rendering and drying apparatus, are inclosed in a building or operating-room, B, which is large enough to contain the operatives as well as the apparatus, and which is constructed as follows: The side walls, b b b b, from the bottom upward to the uppermost level of the inclosed space, are thoroughly sealed to prevent any escape of the gases through them, the only inlet for air into the building or room being at the bottom 1) thereof, and the outlet through which the gases pass out of the building or room being at the top thereof, at O. The building or room is made so as to readily direct the gases from all parts thereof to the flue O, to which endthe roof b is made to inelose a tapering space, b the root being pyramidal in its general form; or, what is equivalent thereto, the entire space within the walls I) b and roof b may taper or contract from the bottom upward to the flue.

0. Care should also be taken to avoid forming any pockets in the building or room in which the gases may be caught and held.

In the fiuc O a basket, grate, cage, fire-place, or other suitable form of apparatus, D, for sustaining or causing a fire is arranged, and in such a manner as to intercept the gases flowing through the flue, the operation of this part of the improvementbeing as follows During the rendering a fire is maintained in the fireplace D. As the flue O is the only outlet for the gases, the latter are compelled to pass'through from the building or room to become deodorized and harmless, the fire acting to destroy whatever is baneful or disagreeable in the cttluvia.

It is not essential that the fire-place D belocated preciselyat the point of'the flueO shown. If the latter should be extended, the fire-place might be arranged at any suitable point therein but, wherever located, the gases should be directed through the fire before escaping to the outer air.

As steam is generally used in heating and cooking the, contents of the tanks, and as in practice it creates dampness in the operatingroom, it becomes essential to dispose of it and not allow it to come in contact with the fire in the flue O and deaden it, for unless the fire is kept bright the objectionable portion of the gas is liable to escape. Accordingly, in place of allowing the steam to escape from the tanks A A into the room B, the steam is discharged through the pipes a a into water in the vessels a a, and there condensed, and the overflow from the vessels a a. is discharged through the pipes a a into an underground sewer, I. The waste contents of the tanks are also, as shown at HH, discharged, when desired, into the sewer. Provision is thus made for entirely disposing of the objectionable gases and matterof the establishment through the fire in the flue O, and through the underground sewer I, the offensiveness of the gaseousportion is destroyed, and solid or semisolid matter is carried oft and delivered at a point remote from the building. Such solid matter, however, as can be used for fertilizer material can be, and preferably is, taken from the tanks and dried and prepared in the room B. For economical purposes the fire-place D may be the one beneath the boiler that supplies the steam to the tank.

As the tanks A A become heated in use to such a degree as to be inconvenient to the operator, they may be surrounded by a casing, K, forming an air-space, It, around the tank and open at the lower end, to admit air, and at the upper end connecting with a pipe, H, which extends upward above the level at which the operator has to stand-that is, if the the tire. This causes the gases and cxhalations operator, as is usual, stands upon a platform, I

L, the pipe k is extended upward above the tank and to such a height that the air flowing upward through the space kshall be discharged above the head of the operator.

The circulation of the various gaseous and other currents is indicated by the arrows.

It will be seen that the device now described is well adapted for its purpose and conducts off all noisome odors. The fire in the flue not only destroys the gases, but causes a draft therein, so that the consumption moves 1mm passu with the rising e'xhalations. At the same time the heated air rising through the pipes 70 assists and increases this draft and consequent destruction of the gases. The whole is materially assisted by the construction of the outer casingor shell. As before observed, the operatives work in this room, and it is advisable and beneficial that the exhalations should pass out rapidly and at the same time be destroyed, so as not to taint the outside air.

I am aware that many and various renderin g apparatus have been devised and'patented wherein the exhalations have been sought to be destroyed, and wherein attempt has been made to assist the draft. I am aware that gasjets have been placed in flues to assist draft, and that fires have been employed to assist ventilation, and also that a tapering roof has been made to rendering establishments. I therefore lay no broad claim to any such devices; but I am not aware that there has been before devised such a combination and juxtaposition of parts, whereby is insured a perfect drat'tand destruction of noxious vapors, whereby the operatives within the establishment are relieved and the air outside not tainted; but

What I claim is- A rendering apparatus or establishment having a tapering roof and a flue at the top of the latter, wherein is placed a basket for fire, in combination with the inclosed tanks surrounded by casings, from which pipes run upward to the roof the whole constructed and arranged as and for the purpose set forth.

GEO. BAYIIA.

Witnesses:

Units. 1). Moonv, SAML. S. Born. 

